Key holder



FIG. 1 is a side elevational view of a key holder showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view showing the side opposite to that of FIG. 1. 

The ornamental design for a key holder, as shown and described. 